Question

The test statistic of zequalsnegative 2.44 is obtained when testing the claim that pequals2 divided by 3. a. Using a significance level of alphaequals0.10​, find the critical​ value(s). b. Should we reject Upper H 0 or should we fail to reject Upper H 0​?

Answer 1

Explanation:

Given that The test statistic of zequalsnegative 2.44 is obtained when testing the claim that pequals2 divided by 3

Hypothesis is

H0:p = 2/3

Ha:p not equals 2/3

(Two tailed test for proportions)

Alpha =0.10

For 90% confidence level Z critical = ±1.645

Test statistic = -2.44

This lies outside (-1.645, 1.645)

Hence reject null hypothesis

b) We should reject null hypothesis.